CN201907481U - Brain wave anti-collision helmet belt - Google Patents
Brain wave anti-collision helmet belt Download PDFInfo
- Publication number
- CN201907481U CN201907481U CN2011200271857U CN201120027185U CN201907481U CN 201907481 U CN201907481 U CN 201907481U CN 2011200271857 U CN2011200271857 U CN 2011200271857U CN 201120027185 U CN201120027185 U CN 201120027185U CN 201907481 U CN201907481 U CN 201907481U
- Authority
- CN
- China
- Prior art keywords
- safety
- brain wave
- safety strap
- tightening device
- belt reel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 210000004556 brain Anatomy 0.000 title claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 230000003139 buffering effect Effects 0.000 claims description 28
- 230000033001 locomotion Effects 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 2
- 206010039203 Road traffic accident Diseases 0.000 abstract description 8
- 206010000117 Abnormal behaviour Diseases 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 230000036541 health Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 101100450138 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) hat-2 gene Proteins 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002618 waking effect Effects 0.000 description 2
- 206010033892 Paraplegia Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000004886 head movement Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Images
Landscapes
- Helmets And Other Head Coverings (AREA)
Abstract
The utility model relates to an automobile safety device with active and passive features, which belongs to the field of automobile safety equipment. In the device, a safety belt tightening device is arranged at the position of a seat headrest; the exposed end of the safety belt is connected with a helmet through a lock catch and a bolt; a brain wave sensor is arranged on the peak of the helmet; the brain wave sensor is connected to the input end of a microcomputer through a signal line; and the output end of the microcomputer is connected with an engine rotating speed mechanism and a brake electric control mechanism of a vehicle. The brain wave anti-collision helmet belt can monitor the abnormal behaviors of a driver in real time, timely prompt, reduce the speed or brake, protect the safety of the head of a user and prevent the cervical vertebra of the driver and passengers from being injured in a traffic accident, and is characterized by low cost and good reliability compared with a safety airbag.
Description
Technical field
The utility model relates to a kind of auto-safety mechanism, belongs to the safety traffic apparatus field.
Background technology
Traffic safety is the factor that vehicle drive is at first considered.For the safety device of automobile, be divided into active safety feature and passive safety feature.All automobiles have all disposed safety strap and chair headrest at present, and configuration on the seat is body-restraining seat belt usually, are used for people's health is located on the seat.Though existing automobile has disposed safety strap, when traffic accident took place, head still can be inflicted heavy losses on by the force of inertia effect, and the part automobile is provided with safety air bag for this reason.But there is following defective in safety air bag: 1. safety air bag, can't in time be opened when traffic accident takes place because some product design does not pass a test; 2. when colliding at a high speed, even safety air bag is opened, what the head of chaufeur still can be heavy strikes on the safety air bag, rebounds then, can cause cervical vertebra impaired in this process, medically is referred to as the damage of swishing a whip property of cervical vertebra, the serious high paraplegia that causes.Therefore the factor that influences driver and crew's rehabilitation maximum in the future in traffic accident is the damage of swishing a whip property of cervical vertebra.
How to solve the defective that safe automobile air bag exists, when traffic accident takes place, can improve the protection effect; Simultaneously, the device that can initiatively monitor the driving behavior of chaufeur in real time is extremely important problem.This safety device should have following characteristics: 1. can find initiatively that in time driving behavior is unusual, and in time point out or brake; 2. can protect chaufeur and other personnel's head safety of riding, swishing a whip property of driver and crew's cervical vertebra damage when preventing traffic accident; 3. cost is low, good reliability.
Summary of the invention
Technical problem to be solved in the utility model provides the crashproof safe hatband of a kind of brain wave formula, can substitute safety air bag, can find in time that driving behavior is unusual, and prompting in time or brake; Can protect chaufeur and other personnel's head safety of riding, swishing a whip property of driver and crew's cervical vertebra damage when preventing traffic accident; Cost is low, good reliability.
Solving the technical scheme that technical matters of the present utility model adopts is: in the position of chair headrest the safety strap tightening device is housed, the exposed junction of safety strap is by snap close and latch attachment security cap, the brim of a hat of safety cap is equipped with brain wave sensor, brain wave sensor is connected to the input end of micro computer by signal wire (SW), and the output of micro computer connects the engine speed electrical control mechanism of automobile and the electrical control mechanism of brake.
Concrete technical scheme of the present utility model also comprises:
The safety strap tightening device adopts the Bringing-back mechanism that installs back coil spring on belt reel; The shell cross section of safety strap tightening device is the ellipse of an end greater than the other end, outer casing inner wall is provided with the wedge shape draw-in groove, band draw-in groove wheel disc is housed on the belt reel, belt reel is packed in the sliding tray, the big oval end of the outer shell of one end of sliding tray, the little oval end of the outer shell of the other end is equipped with the support spring of belt reel being pressed to big oval end in the sliding tray.
The belt reel periphery of safety strap tightening device is by the skin buffering spool cover of the buffering spring sheet connection concentric of arc, and the built-in fixed end of safety strap is connected the buffering spool and puts on the set safety strap fixed card slot.
Buffering spool cover is positioned at the middle part of belt reel, two band draw-in groove wheel discs are fixed on the both sides of buffering spool cover, the wedge shape draw-in groove of outer casing inner wall is arranged on the scope of corresponding band draw-in groove wheel disc shift motion, one end of support spring is pressed on the spring pedestal of sliding tray end, and the other end is pressed on the belt reel by become slippage bonded assembly supporting sliding shoe with sliding tray.
Be provided with the collection chamber in the chair headrest, the integral installation of safety strap tightening device is fixed with the steelframe of chair back in the collection chamber; The brim of a hat of safety cap is provided with adjusting button, and the connection snap close is brought by connection in the brim of a hat rear, is connected in the latch of safety strap exposed junction again; Rear side at chair headrest is provided with the safety cap storage bag; The signal wire (SW) fixed leg is equipped with in the seat side, above signal wire (SW) hangs over.
Before driving a car, can regulate the degree of tightness adjusting button of the brim of a hat, latch can be inserted in the snap close tighten up then, put on a safety helmet according to user's head size.Behind the running car, along with the motion of head than low velocity, safety strap can freely extend, and under the effect of backrush spring, can shrink by return.Chair headrest central authorities centre joint position is provided with the collection hole, and the connecting band on the safety cap, snap close and latch can all bounce back in the collection chamber, make head feel comfortable.Safety strap tightening device shell and adapter plate welding, the safety strap tightening device is provided with fixed orifice, can be fixed together by bolt and seat steelframe.When cruising, the motion of head has certain action radius and mechanics.Safety strap is wrapped in the buffering spool and puts, and buffering spool cover is connected with belt reel by buffering spring sheet, and the belt reel captive joint the folding and unfolding Bringing-back mechanism of backrush spring as safety strap.Because the brim of a hat of safety cap is equipped with brain wave sensor, this sensor can transfer to the eeg signal of fatigue driving state in the micro computer and at read out instrument and show, and the driving condition of chaufeur is monitored.When driver tired driving, with the carry out signal contrast of the abnormal driving state electric signal that stores, and send the corresponding action instruction to engine speed electrical control mechanism, brake electrical control mechanism in the micro computer according to the contrast situation this moment in good time.
The active safety defencive function: if chaufeur is in fatigue driving state, brains is in holddown so, just the brain wave of brain wave and waking state is different, through eeg signal is amplified, sends into micro computer analysis.If after finding to be in fatigue driving, micro computer provides acousto-optic hint and phonetic warning, point out invalid back (eeg signal does not still have change), then control micro computer and send instruction, reduce engine speed, if still having change, situation do not shut down by force.
The passive security defencive function: when getting into an accident suddenly, the whole body forward of chaufeur is dished out, and the safety strap of seatbelt and safety cap works simultaneously, and tension people's health and head avoid head impact to arrive bearing circle or on glass.Because the head and the health of human body are strained synchronously, stop to travel forward, and make head and health almost not have relative motion, so just avoided the damage of swishing a whip property of cervical vertebra up hill and dale.This function is consistent with the function of safety air bag, but cost is far below safety air bag.The working process of safety air bag is venting at once again after opening, be used for avoiding the damage of swishing a whip property of cervical vertebra as far as possible, and the working process of this complexity has proposed high requirement for the quality of production, reliability, the technology of safety air bag, therefore can't reduce production costs.
The protection working process of this induction safe hatband is: 1. mechanical protection.When head is in high-speed motion, safety strap is pulled out rapidly, band tooth spool wheel disc in its tightening device quickens to rotate, because of being subjected to the application force of outwards pulling out of safety strap, the elastic force that entire belt tooth spool wheel disc overcomes the spool support spring outwards moves, latch on its excircle just snaps in the wedge shape inwall draw-in groove that is provided with on the safety strap tightening device shell, makes band draw-in groove wheel disc by locked, and safety strap also just is locked.After the locking, buffering spool cover by buffering spring sheet also can and belt reel between a small amount of kicking motion is arranged, avoided head to be subjected to fierce the impact; 2. computer program protection.The computer expert crosses the chaufeur brain wave that sensor transmissions is come in and detects, and when finding to be in fatigue driving, can send instruction, reduces engine speed, perhaps shuts down by force.
During hatband not safe in utilization, the latch in the snap close can be pulled out, its structure can be with reference to traditional body-restraining seat belt snap close, again safety cap is put into seat back after the safety cap storage bag in get final product.
The beneficial effects of the utility model are: solved the defective that safe automobile air bag exists, cost is extremely low.Have: 1. can find in time that driving behavior is unusual, and prompting in time or brake; 2. can protect chaufeur and other personnel's head safety of riding, swishing a whip property of driver and crew's cervical vertebra damage when preventing traffic accident.
Description of drawings
Fig. 1 is outward appearance running condition figure of the present utility model;
Fig. 2 is the schematic appearance of safety cap of the present utility model and safety strap;
Fig. 3 is the utility model safety strap tightening device schematic appearance;
Fig. 4 is the utility model safety strap tightening device master pseudosection;
Fig. 5 is the utility model safety strap tightening device side cutaway view;
Fig. 6 is the utility model integral structure scheme drawing;
Fig. 7 is an electric control principle scheme drawing of the present utility model.
In Fig. 1～7: 1. sunshade, the 2. the brim of a hat, 3. brain wave sensor, 4. chair headrest, 5. safety strap tightening device, 6. adjusting button, 7. connecting band, 8. snap close, 9. latch, 10. adapter plate, 11. shells, 12. belt exit, 13. safety strap, 14. fixed orifices, 15. buffering spool cover, 16. band draw-in groove wheel discs, 17. support springs, 18. sliding tray, 19. spring pedestals, 20. supporting sliding shoes, 21. the wedge shape draw-in groove, 22. buffering spring sheets, 23. belt reel, 24. signal wire (SW), 25. backrush springs, 26. backrush spring fixed ends, 27. shell inner cavity, 28. signal wire (SW) fixed legs, 29. safety strap fixed card slots, 30. the safety cap storage bag, 31. collection chambeies, 32. micro computers.
The specific embodiment
Referring to each figure, brain wave sensor 3 is installed on the brim of a hat 2, the brim of a hat 2 is provided with degree of tightness adjusting button 6, can regulate according to user's head size, the brim of a hat 2 rears are provided with connecting band 7, and connecting band 7 tail ends are installed snap close 8, and cooresponding with it latch 9 can insert and take out easily, latch 9 is connected with safety strap 13 and tightens up, and latch 9 is simultaneously as the socket of signal wire (SW) 24.Brain wave sensor 3 usefulness signal wire (SW)s 24 connect, and this signal wire (SW) length has one section surplus, inserts in the cavity in the back of seat, and an end is fixed on the line signal wire (SW) fixed leg 28, and the other end utilizes gravity to hang down naturally.Chair headrest 4 centre joint positions according to head back side of head position back of seat are provided with collection chamber 31, and under the effect of backrush spring 25, connecting band 7, dress snap close 8 and latch 9 can all bounce back in the collection chamber 31, make head feel comfortable.Safety strap tightening device 5 is installed in the back lower place of B shape chair headrest 4, safety strap tightening device shell 11 and adapter plate 10 welding, and adapter plate 10 is provided with fixed orifice 14, can be fixed together by bolt and seat steelframe.Safety strap tightening device 5 is provided with belt exit 12, and the interior set terminal of safety strap 13 is fixed in the safety strap fixed card slot 29 that cushions on the spool cover 15, and safety strap 13 is wrapped on the buffering spool cover 15.Buffering spool cover 15 is connected with belt reel 23 by the buffering spring sheet 22 of arc.The both sides of buffering spool cover 15 are band draw-in groove wheel disc 16, the two ends of this spool are embedded in the supporting sliding shoe 20, supporting sliding shoe 20 is inserted in the sliding tray 18, can be free to slide along sliding tray 18, the wedge shape of sliding tray 18 outer shells is dwindled end spring pedestal 19 is installed, and support spring 17 is pressed between supporting sliding shoe 20 and the spring pedestal 19.The oval cross section of safety strap tightening device shell 11 has pre-small post-large wedge structure, and inwall is provided with wedge shape draw-in groove 21, and band draw-in groove wheel disc 16 is fixed with an end of backrush spring 25, and band draw-in groove wheel disc 16 is captiveed joint with belt reel 23.The signal wire (SW) 24 of brain wave sensor passes safety strap tightening device shell and links to each other with signal wire (SW) fixed leg 28 in the back of seat internal cavity, and another part line hangs down naturally, and eeg signal transfers in micro computer 32 and the read out instrument.Be provided with safety cap storage bag 30 after the seat back, when the time spent can conveniently not stored up.
Before driving a car, can transfer the brim of a hat joint degree of tightness adjusting button 6, latch 9 can be inserted in the snap close 8 tighten up, put on a safety helmet then according to user's head size.Behind the running car, along with the motion of head, safety strap can freely extend, and under the effect of backrush spring 25, can freely understand contraction, and signal wire (SW) 24 bounces back under the effect of gravity with safety strap 13 motions.Chair headrest 4 central centre joint positions are provided with collection chamber 31, and connecting band 7, dress snap close 8 and latch 9 can all bounce back in the collection chamber 31, make head feel comfortable.Safety strap tightening device 5 is installed in the below of B shape chair headrest 4, safety strap tightening device shell 11 and adapter plate 10 welding, and the safety strap tightening device is provided with fixed orifice 14, can be fixed together by bolt and seat steelframe.When cruising, the motion of head has certain action radius and mechanics because safety strap 13 is wrapped on the buffering spool cover 15, the buffering spring sheet 22 of buffering spool cover 15 by the buffering spool with
If chaufeur is in fatigue driving state, brains is in holddown so, just the brain wave of brain wave and waking state is different, this eeg signal is exaggerated, and sends into micro computer analysis.After predefined program in the micro computer finds that chaufeur is in fatigue driving; can provide acousto-optic hint or phonetic warning by the control micro computer; point out invalid back (head movement rule electric signal does not have change); then send instruction; reduce engine speed; do not shut down by force if eeg signal still has change, realize the active safety protection.This device adopts the brain wave monitoring, and then accuracy is higher.
When getting into an accident suddenly, head is in high-speed motion, safety strap is pulled out rapidly, band draw-in groove wheel disc in the safety strap tightening device quickens to rotate thereupon, because at this moment the outside pulling force that is subjected to of safety strap is very unexpected also very big, entire belt draw-in groove wheel disc can drive the elastic force that belt reel overcomes support spring and outwards move, because the containment structure of safety strap tightening device is pre-small post-large, has taper structure, band draw-in groove wheel disc outwards moves and just snaps on the shell in the cooresponding wedge shape draw-in groove, make band draw-in groove wheel disc by locked, safety strap is locked thereupon.After the locking, buffering spool cover is by also rotating slightly between buffering spring sheet and the buffering spool, and safety strap can obtain a bit of kicking motion, avoids head to be impacted, and has played the passive security protective effect.
During hatband not safe in utilization, the latch in the snap close can be pulled out, its structure is identical with traditional body-restraining seat belt snap close, but automatic drawing back safety strap and latch, and then with safety cap put into seat back after the safety cap storage bag in get final product.
Claims (5)
1. crashproof safe hatband of brain wave formula, it is characterized in that: the safety strap tightening device is housed in the position of chair headrest, the exposed junction of safety strap is by snap close and latch attachment security cap, the brim of a hat of safety cap is equipped with brain wave sensor, brain wave sensor is connected to the input end of micro computer by signal wire (SW), and the output of micro computer connects the engine speed electrical control mechanism of automobile and the electrical control mechanism of brake.
2. the crashproof safe hatband of brain wave formula according to claim 1 is characterized in that: the safety strap tightening device adopts the Bringing-back mechanism that installs back coil spring on belt reel; The shell cross section of safety strap tightening device is the ellipse of an end greater than the other end, outer casing inner wall is provided with the wedge shape draw-in groove, band draw-in groove wheel disc is housed on the belt reel, belt reel is packed in the sliding tray, the big oval end of the outer shell of one end of sliding tray, the little oval end of the outer shell of the other end is equipped with the support spring of belt reel being pressed to big oval end in the sliding tray.
3. the crashproof safe hatband of brain wave formula according to claim 2, it is characterized in that: the belt reel periphery of safety strap tightening device is by the skin buffering spool cover of the buffering spring sheet connection concentric of arc, and the built-in fixed end of safety strap is connected the buffering spool and puts on the set safety strap fixed card slot.
4. the crashproof safe hatband of brain wave formula according to claim 3, it is characterized in that: buffering spool cover is positioned at the middle part of belt reel, two band draw-in groove wheel discs are fixed on the both sides of buffering spool cover, the wedge shape draw-in groove of outer casing inner wall is arranged on the scope of corresponding band draw-in groove wheel disc shift motion, one end of support spring is pressed on the spring pedestal of sliding tray end, and the other end is pressed on the belt reel by become slippage bonded assembly supporting sliding shoe with sliding tray.
5. the crashproof safe hatband of brain wave formula according to claim 3 is characterized in that: be provided with the collection chamber in the chair headrest, the integral installation of safety strap tightening device is fixed with the steelframe of chair back in the collection chamber; The brim of a hat of safety cap is provided with adjusting button, and the connection snap close is brought by connection in the brim of a hat rear, is connected in the latch of safety strap exposed junction again; Rear side at chair headrest is provided with the safety cap storage bag; The signal wire (SW) fixed leg is equipped with in the seat side, above signal wire (SW) hangs over.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200271857U CN201907481U (en) | 2011-01-27 | 2011-01-27 | Brain wave anti-collision helmet belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200271857U CN201907481U (en) | 2011-01-27 | 2011-01-27 | Brain wave anti-collision helmet belt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201907481U true CN201907481U (en) | 2011-07-27 |
Family
ID=44299690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200271857U Expired - Fee Related CN201907481U (en) | 2011-01-27 | 2011-01-27 | Brain wave anti-collision helmet belt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201907481U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102114823A (en) * | 2011-01-27 | 2011-07-06 | 昆明理工大学 | Brain wave-type collision protection helmet/belt |
| CN117549915A (en) * | 2024-01-12 | 2024-02-13 | 常州海图信息科技股份有限公司 | Mining driver driving behavior monitoring device and method |
-
2011
- 2011-01-27 CN CN2011200271857U patent/CN201907481U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102114823A (en) * | 2011-01-27 | 2011-07-06 | 昆明理工大学 | Brain wave-type collision protection helmet/belt |
| CN102114823B (en) * | 2011-01-27 | 2016-04-20 | 昆明理工大学 | The preparation method of brain wave-type collision protection helmet/belt |
| CN117549915A (en) * | 2024-01-12 | 2024-02-13 | 常州海图信息科技股份有限公司 | Mining driver driving behavior monitoring device and method |
| CN117549915B (en) * | 2024-01-12 | 2024-03-19 | 常州海图信息科技股份有限公司 | Mining driver driving behavior monitoring device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102114823A (en) | Brain wave-type collision protection helmet/belt | |
| US10029633B2 (en) | Protective member for a vehicle | |
| US20210076768A1 (en) | Helmet with Sliding Facilitator Arranged at Energy Absorbing Layer | |
| US9879741B2 (en) | Protective member | |
| CN102114824A (en) | Electromagnetic induction type anti-collision safety helmet belt | |
| Allen et al. | Acceleration perturbations of daily living: a comparison to ‘whiplash’ | |
| CN106347180B (en) | Child safety seat and its incidence protect system | |
| CN201907481U (en) | Brain wave anti-collision helmet belt | |
| US5947515A (en) | Driver safety capsule | |
| CN201923066U (en) | Electromagnetic inductive anti-collision safety cap and belt | |
| CN102697230A (en) | Wearing device for helmet of firefighter for urban rescue | |
| CN107472181A (en) | A kind of retracting device of the active safety air bag of vehicle | |
| CN103027423A (en) | Electric bicycle helmet | |
| CN102582484A (en) | Automobile safety protective cabin | |
| CA3022258A1 (en) | Helmet with inflatable airbag | |
| Viano et al. | Biomechanics of brain injury | |
| WO2020199380A1 (en) | Neck protection apparatus, vehicle seat, child safety seat, and vehicle | |
| CN201019011Y (en) | Safety harnesses | |
| Morris et al. | Measuring airbag injury risk to out-of-position occupants | |
| CN210502600U (en) | Force limiting type retractor assembly | |
| Capitani et al. | Design and numerical evaluation on an airbag-jacket for motorcyclists | |
| CN202271955U (en) | Children safety seat with safety bags | |
| CN107933384A (en) | A kind of safety chair seats of car to children head with defencive function | |
| CN213167815U (en) | Child safety seat with alarm function | |
| CN203407570U (en) | Motorcycle safety helmet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110727 Termination date: 20130127 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |